Question

fielding Ca2+, PO 3-, and OH ions. reates pits and cavities in the tooth. and hu hacterial fer less acid-soluble Huuropatice, ua, 21. ITUUTTUU containing toothpastes enhance this exchange process and provide protection against tooth decay, 10) Indicate whether the following are an oxidation, a reduction, or neither (2pts) (note: these are half reactions, not balanced chemical reactions] --Use your definitions given in class. Oxidation/reduction/neither a) C₂H2 ...... Cato b) Cu*2 .......→ Cu*1 c) CO₂ ....... co 11) Give the total number of valence electrons (4 pts) and the Lewis structure (6 pts) for | a) HCN

Answer 1

a C₂H₂ Catto reduction addition of hydrogen to alkone or allyne known as reduction b) Cuth - Cut reduction oxidation no. Known as decrease in reduction c) to the Reduction Removal cef oxygen known as reduction / decreas oxidation no. in 0 H-c = Ň (Lewis structure / valence electron = v. E of H+ v.f. of C + V. E. of N 1+ 4 + Total valence é = 10e 5